120.05% is the change from 409 to 900
Calculation steps:
[( 900 - 409 ) ÷ 409] x 100 = 120.05%
Formula
Percentage change = [(900 - 409) / 409] x 100
Subtract the new number by the original number
900 - 409 = 491
491 ÷ 409 = 1.2004889975550121
1.2004889975550121 x 100 = 120.05%